题目内容

Airplanes can be the best for traveling large distances in a short amount of time.()
Opting for the train saves you hassle at the airport.()
Trip goals and personal preferences should be linked.()
Bus rides might promote health.()

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The secretary is trying to ________(schedule) the month’s appointments.

It is by no(mean)_____easy to forget his good behavior.

设G是非零数乘法群,下列映射是G到G的同态映射是()。

A. f(x)=2x
B. f(x)=|X|
C. f(x)=X
D. f(x)=x+1

药品零售企业的主要任务?

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